Figueira, Pont, Mordasini, Alibert, Georgy, Benz
... The discovery by radial velocity surveys of close-in planets in the 4-20 Earth-mass range (e.g. Lovis et al. 2004, Udry et al. 2007, Mayor et al. 2008) has motivated the development of several sets of structure models of these planets (Valencia et al. 2007; Fortney et al. 2007; Seager et al. 2007). ...
... The discovery by radial velocity surveys of close-in planets in the 4-20 Earth-mass range (e.g. Lovis et al. 2004, Udry et al. 2007, Mayor et al. 2008) has motivated the development of several sets of structure models of these planets (Valencia et al. 2007; Fortney et al. 2007; Seager et al. 2007). ...
On disc driven inward migration of resonantly coupled planets with
... It is the purpose of this paper to investigate such resonant interaction and whether, for reasonable protoplanetary disc models, it leads to a locking such that the planets subsequently migrate maintaining the commensurability. Similar behavior occurs as a result of the tidally induced migration of ...
... It is the purpose of this paper to investigate such resonant interaction and whether, for reasonable protoplanetary disc models, it leads to a locking such that the planets subsequently migrate maintaining the commensurability. Similar behavior occurs as a result of the tidally induced migration of ...
Planet-finding Activity Guide How do we find planets around other
... NASA and its partners also plan to use Gravitational Microlensing to find planets around other stars. This method derives from one of the insights of Einstein’s theory of general relativity: gravity bends space. We normally think of light as traveling in a straight line, but light rays become bent w ...
... NASA and its partners also plan to use Gravitational Microlensing to find planets around other stars. This method derives from one of the insights of Einstein’s theory of general relativity: gravity bends space. We normally think of light as traveling in a straight line, but light rays become bent w ...
the heavens revealed - Chapin Library
... included a central sun and a moving earth. He circulated a draft of this heliocentric theory among trusted friends, but evidently concluded, upon the publication of Ptolemy’s complete Almagest in , that a more extensive mathematical treatment was required to support his own conclusions. ...
... included a central sun and a moving earth. He circulated a draft of this heliocentric theory among trusted friends, but evidently concluded, upon the publication of Ptolemy’s complete Almagest in , that a more extensive mathematical treatment was required to support his own conclusions. ...
The Solar System - Gordon College English Center
... A planet is a celestial object that orbits around a star. The force which holds the planet in orbit around its star is the force of gravity. Planets have round shape. It is so because of their own gravity that pulls them into a spherical shape. Planets differ from stars by not producing light by any ...
... A planet is a celestial object that orbits around a star. The force which holds the planet in orbit around its star is the force of gravity. Planets have round shape. It is so because of their own gravity that pulls them into a spherical shape. Planets differ from stars by not producing light by any ...
Investigate Planets, Stars, Galaxies, and the Universe
... one area — Planets, Stars, Galaxies, or the Universe — in which to become an expert. Distribute the worksheets to the corresponding experts across all groups. You may want to review the worksheets and the map of the exhibition with students before your visit. At the Museum, have students work in pai ...
... one area — Planets, Stars, Galaxies, or the Universe — in which to become an expert. Distribute the worksheets to the corresponding experts across all groups. You may want to review the worksheets and the map of the exhibition with students before your visit. At the Museum, have students work in pai ...
PPT
... well-known basic angle (monitored) Object matching in different scans (e.g. GSC II method) Full sphere reduction to determine 5 astrometric parameters per star by a global iterative method (>100 measures) Binary models fitted to systems with large residuals GAIA observations of quasars (known and ne ...
... well-known basic angle (monitored) Object matching in different scans (e.g. GSC II method) Full sphere reduction to determine 5 astrometric parameters per star by a global iterative method (>100 measures) Binary models fitted to systems with large residuals GAIA observations of quasars (known and ne ...
PDF Full-text
... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
Assessing the Possibility of Biological Complexity on Other
... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
... and in deep space [8]. Water is among the most common molecules in the universe, and a host of other liquids can exist at planetary temperatures [9]. Besides an abundance of light and heat in all stellar systems, many other forms of energy are locally available on probably most planetary bodies [10– ...
Evolution of a Planetary System
... by temperature: O-type stars are the hottest stars and N-type stars are the coolest. We will study three types of stars: white (A), yellow (G), and red (M). 2. Mission Briefing. Have the students refer to the Mission Briefing in their Student Logbook, as one student reads it aloud. “In order to deci ...
... by temperature: O-type stars are the hottest stars and N-type stars are the coolest. We will study three types of stars: white (A), yellow (G), and red (M). 2. Mission Briefing. Have the students refer to the Mission Briefing in their Student Logbook, as one student reads it aloud. “In order to deci ...
Origins: Where Are the Aliens?
... that the overhead represents spectra that are mostly in the visible part of the electromagnetic spectrum; students will be studying absorption spectra that exist in the infrared region. 6 Once students have a basic understanding of spectra, they can begin their research. Organize students into teams ...
... that the overhead represents spectra that are mostly in the visible part of the electromagnetic spectrum; students will be studying absorption spectra that exist in the infrared region. 6 Once students have a basic understanding of spectra, they can begin their research. Organize students into teams ...
Star-S_Teacher_Guide - The University of Texas at Dallas
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
Summary: Star Formation Near and Far
... infall effects can indeed be seen when one looks hard enough. Even though we still do not understand in any detail the origin of the jets, we can no longer doubt, after seeing the striking HST picture of the HH30 jet emerging from the center of a protostellar disk, that jets originate from the inner ...
... infall effects can indeed be seen when one looks hard enough. Even though we still do not understand in any detail the origin of the jets, we can no longer doubt, after seeing the striking HST picture of the HH30 jet emerging from the center of a protostellar disk, that jets originate from the inner ...
Prospects for detection of protoplanets
... • By an age of 300 Myr the dust masses were found to by decreased by at least 2 orders of magnitude (Zuckerman & Becklin 1993). • Based on studies with the Infrared Space Observatory (ISO), the disk fraction amounts to much less than 10% for stars with ages > 1 Gyr (e.g., Spangler et al. 2001; Habin ...
... • By an age of 300 Myr the dust masses were found to by decreased by at least 2 orders of magnitude (Zuckerman & Becklin 1993). • Based on studies with the Infrared Space Observatory (ISO), the disk fraction amounts to much less than 10% for stars with ages > 1 Gyr (e.g., Spangler et al. 2001; Habin ...
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... radiates energy into the surrounding medium. Jupiter also does this, some internal heat is generated due to radioactive decays, but that is much less than the energy it receives from the Sun. Jupiter is not a star. ...
... radiates energy into the surrounding medium. Jupiter also does this, some internal heat is generated due to radioactive decays, but that is much less than the energy it receives from the Sun. Jupiter is not a star. ...
No. 54 - Institute for Astronomy
... A team of astronomers, including IfA astronomer Andrew Howard and IfA graduate students Evan Sinukoff and BJ Fulton, discovered a planetary system orbiting a star that is only 54 light-years away. They found the planets using measurements from the Automated Planet Finder (APF) Telescope at the Unive ...
... A team of astronomers, including IfA astronomer Andrew Howard and IfA graduate students Evan Sinukoff and BJ Fulton, discovered a planetary system orbiting a star that is only 54 light-years away. They found the planets using measurements from the Automated Planet Finder (APF) Telescope at the Unive ...
First Light for May, 2001 - South Bay Astronomical Society
... planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method provides for a wider range of planetary systems. If both methods can be used on a exo-system, the size and mass of the pl ...
... planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method provides for a wider range of planetary systems. If both methods can be used on a exo-system, the size and mass of the pl ...
doc - Pocket Stars
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
Chemical Evolution
... In closed-box model the metallicity is directly related to the gas mass fraction, – less massive disk galaxies have a larger gas mass fraction yes. the metallicity–luminosity relation may reflect the impact of inflow and/or outflow. – If the infall rate is larger than the star-formation rate, the ac ...
... In closed-box model the metallicity is directly related to the gas mass fraction, – less massive disk galaxies have a larger gas mass fraction yes. the metallicity–luminosity relation may reflect the impact of inflow and/or outflow. – If the infall rate is larger than the star-formation rate, the ac ...
Undiscovered Worlds educators guide
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
... Until very recently, planets outside our own solar system existed only in our imaginations. Scientists had been hypothesizing about their existence for centuries, but they did not have the technology required for definitive proof. It was not until 1992 that astronomers Aleksander Wolszczan and Dale ...
4. The Solar System
... 4.4 Planets Beyond the Solar System • This plot shows the masses of many extrasolar planets discovered so far. Most have masses closer to the mass of Jupiter or Neptune than that of Earth. ...
... 4.4 Planets Beyond the Solar System • This plot shows the masses of many extrasolar planets discovered so far. Most have masses closer to the mass of Jupiter or Neptune than that of Earth. ...
Communication with Extraterrestrial Intelligence (CETI)
... reconsider our own solar system (where we may have some hope of systematic in situ sampling), and we should expand our inspection to any bodies capable of providing raw materials and energy sources that might be exploited by biology of any sort. Thus, in addition to the terrestrial planets Venus, Ma ...
... reconsider our own solar system (where we may have some hope of systematic in situ sampling), and we should expand our inspection to any bodies capable of providing raw materials and energy sources that might be exploited by biology of any sort. Thus, in addition to the terrestrial planets Venus, Ma ...
Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in orbit around a star or star system. Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals and circumstellar disks. The Sun together with its planetary system, which includes Earth, is known as the Solar System. The term exoplanetary system is sometimes used in reference to other planetary systems.A total of 1968 exoplanets (in 1248 planetary systems, including 490 multiple planetary systems) have been identified as of 1 October 2015.Of particular interest to astrobiology is the habitable zone of planetary systems where planets could have surface liquid water.